New to the Job: Is It Okay to Ask for Feedback from My Manager After Just One Month?

Would it be appropriate for a new joiner to ask for performance feedback from his/her manager after completing one month?

If yes, I would greatly appreciate help with drafting a letter to this purpose.

Yes, definitely, the new joiner must ask for his/her performance feedback from his/her manager, as this feedback could help the new joiner to improve performance if there are any shortcomings. Otherwise, the new joiner must be praised by the manager to instill confidence in the new joiner.